diff --git a/user_guide_src/source/installation/upgrade_455.rst b/user_guide_src/source/installation/upgrade_455.rst
index 74d2bfbf7b2d..2f3694e4a2e4 100644
--- a/user_guide_src/source/installation/upgrade_455.rst
+++ b/user_guide_src/source/installation/upgrade_455.rst
@@ -32,7 +32,7 @@ and it is recommended that you merge the updated versions with your application:
 Config
 ------
 
-- composer.json
+- preload.php
 
 All Changes
 ===========
@@ -40,4 +40,4 @@ All Changes
 This is a list of all files in the **project space** that received changes;
 many will be simple comments or formatting that have no effect on the runtime:
 
-- composer.json
+- preload.php